I did not argue form authority but because I was not advancing the idea that abortion is a constitutional right. I was advancing the idea that there are experts who think it is. And experts who think otherwise.

But it is not a logical fallacy to use the opinions of an expert in their area of expertise. You know virtually nothing about quantum mechanics and in a discussion about quantum mechanics it is valid to defer to what an expert says on that topic. Indeed, the court system understands the value of expert testimony for good reason. They know that using an expert in their area of expertise is valid and carries weight. Of course that does not mean experts are always right. Just means they know more than you.

None of this is germane to the point I made. I was not arguing from authority. I was talking about what I originally wrote versus what you replied with. Read what I originally wrote. Your point made no sense unless you can show that it is universally agreed by judges (or other experts in law) that there is no constitutional basis for a right to an abortion.